scholarly journals Parametric Schedulability Analysis of Fixed Priority Real-Time Distributed Systems

2014 ◽  
pp. 212-228 ◽  
Author(s):  
Youcheng Sun ◽  
Romain Soulat ◽  
Giuseppe Lipari ◽  
Étienne André ◽  
Laurent Fribourg
Keyword(s):  
Distributed Systems ◽  
Real Time ◽  
Schedulability Analysis ◽  
Fixed Priority

A Review of Hierarchical Fixed Priority Scheduling

2014 ◽  
Vol 536-537 ◽  
pp. 566-569
Author(s):  
Feng Xiang Zhang
Keyword(s):  
Real Time ◽  
Schedulability Analysis ◽  
Priority Scheduling ◽  
Scheduling Policies ◽  
Fixed Priority ◽  
Fixed Priority Scheduling ◽  
Priority Algorithms ◽  
Priority Systems ◽  
Real Time Applications ◽  
Global And Local

This paper focus on two level hierarchical scheduling where several real-time applications are scheduled by the fixed priority algorithms. The application with its real-time tasks is bound to a server which can be modeled as a sporadic task with special care for the schedulability analysis. Different scheduling policies and servers can be applied for hierarchical fixed priority systems, this paper gives a closer review of schedulability analysis for applications and tasks when the global and local schedulers of a system are fixed priority.

Schedulability Analysis of Fixed Priority Servers for Scheduling Aperiodic Real-Time Tasks – A Review

2014 ◽  
Vol 651-653 ◽  
pp. 1933-1936
Author(s):  
Feng Xiang Zhang
Keyword(s):  
Real Time ◽  
Schedulability Analysis ◽  
Timing Constraints ◽  
Sporadic Tasks ◽  
Fixed Priority ◽  
Rate Monotonic ◽  
Aperiodic Tasks ◽  
Deadline Monotonic ◽  
Priority Algorithm

This paper focus on the schedulability analysis of fixed priority servers. A number of fixed priority servers and their schedulability analysis are reviewed, these results and properties can be used for constructing systems with different timing constraints, where real-time tasks with hard deadlines and the soft aperiodic tasks can be scheduled in the same system. The aperiodic tasks in the fixed priority servers are not preemptable, and they are scheduled in a first-come first-served manner. There is only one server with many periodic or sporadic tasks in the system. The tasks and the server are scheduled by a fixed priority algorithm such as rate monotonic or deadline monotonic.

The Algorithms of Dynamic Servers for Scheduling Aperiodic Real-Time Tasks – A Review

2014 ◽  
Vol 945-949 ◽  
pp. 3380-3383
Author(s):  
Feng Xiang Zhang
Keyword(s):  
Embedded Systems ◽  
Real Time ◽  
Schedulability Analysis ◽  
Periodic Tasks ◽  
Dynamic Algorithms ◽  
Fixed Priority ◽  
Aperiodic Tasks ◽  
Hard Real Time

This paper focus on the dynamic server algorithms, and the servers are used for scheduling soft aperiodic tasks. Many types of servers and their schedulability analysis are reviewed, these properties can be used for constructing hierarchical embedded systems, where the soft aperiodic tasks and the hard real-time tasks can be scheduled in the same system. The aperiodic tasks in the server are not preemptable, and they are executed in a first-come first-served (FCFS) manner. If it is not specified, there is only one server in the system, and rest of the processes in the system are ordinary periodic tasks. The servers could be scheduled by fixed priority or dynamic algorithms.

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